Improvement in permutation-locks



UNITED STATES PATENT OEEIGE.

VILLIAM KOCK, OF CINCINNATI, OHIO.

IMPROVEMENT IN PERMUTATION-LOCKS.

Specification forming part of Letters Patent No. 104,961, dated July 5, 1870,

To all whom 'it may concer/n Be it known that I, WILLIAM Kock, of Cincinnati, in the county of Hamilton and State of Ohio, have invented a new and Improved Combination-Lock; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawing, forming part of this specification.

This invention relates to permutation-locks 5 and consists in certain improvements thereon, which will` be more particularly specified hereinaf'ter.

In the accompanying drawing, Figure 1 represents an inner-face view of my improved lock. Fig. 2 is an inner-face view of the same without the locking disk and tumblers. Fig. 3 is a detail face view of the inner tumbler. Fig. 4 is a detail face view of one of the outer tnmblers. Fig. 5 is a central section of the same. Fig. (i is a face view of the lock. Fig. 7 is a vertical transverse section of the same, taken on the plane of the line, Fig. 6. Figs. Sand 9 are inner-face views of the lock without the tumblers, showingthe bolt respectively locked and unlocked. Fig. l0 is an inner end view of the knob, showing how the same is held in the door. Fig. ll is a detail vertical section, 011 an enlarged scale, of the setting-spindle and tumblers.

Similar letters of reference indicate corresponding parts.

A in the drawing represents the lock-case secured to the inner surface of the door B by means of screws a a, or otherwise. Through the door is fitted the shank of a knob, C, the knob itself projecting beyond the outer face of the door, to be readily reached and revolved by hand. The shank b ofthe knob is conical, and has a groove cut into it near its inner end. Into this groove is fitted the inner edge of' an annular plate, D, which is made of two parts, and which is secured in a recess cut into the inner face of the door, as is clearly shown in Fig. 7. Fig. l0 shows the plate D, made of two parts, so that it can be fitted into the groove and secured to the door by screws o, or otherwise. The plate D serves not only to properly guide and support the inner end of the knob-shank, but also to retain the entire knob in place and to prevent it from being withdrawn.

On the outside of the door is fitted upon and around a dial-plate, d, which is sunk into a recess of' a stationary plate, e, that is secured to the door. A mark, f, on the plate e is the index by which to regulate the position of the knob. The inner end of the knob-shank carries an inward-projecting prismatic (Fig. l() represents it hexagonal) pin, g, which enters the lock proper.

In line with the axis of the knob C is fitted into the lock-case a horizontal shaft or spindle, E, which extends almost entirely through the width of the lock, as shown in Fig. 7. The outer end of the spindle projects through the case, and has a polygonal recess, into which the pin g is fitted. Thus the knob is counected with the spindle in such manner that both will turn simultaneously Directly in front ofthe outer plate, lz., ofthe lock is fitted upon the spindle a cani, F, for moving and setting the locking-lever.

A stationary cylindrical box, G, incloses the spindle E almost entirely between the cam F and a disk, H, that is mounted upon the extreme inner end ofthe spindle. The box G is, by projecting arms 'i fi, secured to the plate h ot' the lock-case. Around the box G are placed f'our or more or less circula-r tumblers, I Il l2 I3, &c. Each tumbler is supported and held by a bushing-ring, J. Each ring J is slipped upon the box G, and is prevented from turning thereon by a feather, j. The tumbler-s are respectively slipped upon their several rings J and supported upon fianges of' the same, and can separately and freely turn thereon. The rings serve, therefore, to hold the tuinblers the requisite distance apart and to prevent them from crowding each other.

'From the outer face of' the disk H projects a pin, l, toward the first tumbler, I. This pin is in line with a pin, m, projecting from both faces of the first tumbler, and such pin mis in line with one, n, on the second tumbler, and that in line with the one o on the third tumbler, and one, p, on the fourth tumbler, in4

on, the rst tumbler, and the pin m striking `line the bolt cannot be unlocked.

blers successively until, at the third or fourth` revolution, the third tumbler is reached and brought to its mark. The knob is now again reversed and turned twice to set the secondtumbler and once for the irst, until finally all the tumblers are so set that the notches r in their edges are all in line to receive a tongue, s, of the locking-lever.

L is the locking-lever. It is, by a pin, t, pivoted to the plate h of the lock-case, and is G- shaped to embrace the cam F with its two arms, U V. The tongue s is on the upper arm, U. The lower arm, V, is carried up behind the bolt M, when the same is locked, as in Fig. 8. lt is carried up by an ear, W, on the cam, which strikes the arm U and swings the whole lever up, as in Fig. S, drawing thereby also the tongue s out of the tumblers. When, then, the tumblers are set with their notches out of While the lever L is thus raised the ear W will at each revolution ot' the knob strike an ear, fr, project-ing from a spring-lever, N, that is pivoted to the lower arm, V, as shown. The lever N will then yield to the ear W and allow it to pass as the tumblers hold the lever L elevated. When, however, the notches of the tumblers are in line the lever N will not yield as it is struck by the ear W, but will be forced down, allowing the tongue s to enter the notches and dropping the entire lever L, as in Fig. 2.

Anose, y, of the arm U rests then on the cam F, so that the lever L is elevated still far enough to prevent the bolt from being withdrawn. (See Fig. 2.) lVhen the cam is turned still farther the nose will drop down in a step, z, of the caln, and thereby the arm V will be brought out of the way of the bolt, as in Fig. l, and the latter will be allowed to be drawn in. The bolt is, by a toothed bar, O, connected withu a pin, a', that projects from the arm U. lVhen the lever L is dropped to release the bolt the teeth of the bar O mesh into those of the disk H, as shown in Fig. 1, and then by turning the knob the bolt will be drawn in or moved out at will. The bar O is slotted to move on the pin a without disturbing the lever L while the bolt is being moved. A spring', l?, holds the lever L in either position, and throws it down when the tumblers have been properly set.

The pins m 'n 0 p, &c., are adjustable in slots of the tumblers for the purpose of varying the combination at will. The tumblers are confined to the box G by an annular plate, b',

Awhich is screwed upon the end of the box without disturbing the spindle after the tumblers have been put on.

The spring-lever N is of great importance. It allows the cam F to revolve without disturbing the locking-lever, while the tumblers hold the latter up. lVhcn, however, the notches are in line to let the tongue s drop down, the lever N will, when struck by the ear of the cam, cause the lever L to drop down to the position shown in Fig. 2.

"When the bolt is to be locked the disk rst turned to move it out, and, by further turning the knob, the caln will strike the arm U of L, and will raise L behind the bolt to release the tumblers and lock the bolt out, as in Fig. 8.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination ot' spindle E, cam F, box G, disk H, bushings J, and pins lm fn o p with the tumblers, when all are constructed and arranged as and for the purpose specified.

2. The subject-matter ot' Iirst clause, in oombination with the locking -lever L, having tongue s thereon, and the bolt M, all con structed and arranged as set forth.

3. rEhe slotted tooth-bar O and ratchet-disk H, in combination with lever L and spring l, all arranged and operated to shoot the bolt at the time and in the manner described.

4. The arrangement, in the slots of a series of tumblers, of adjustable pins m n o p, as and for the purpose specified.

VILLIAM KOCK. lVitnesses M. POHLMANN, A. KELLER. 

